19-07-2012, 12:54 PM
Multisensor Fusion
[attachment=28057]
INTRODUCTION
Sensor is a device that detects or senses the value or changes
of value of the variable being measured. The term sensor some
times is used instead of the term detector, primary element or
transducer.
The fusion of information from sensors with different physical
characteristics, such as light, sound, etc enhances the
understanding of our surroundings and provide the basis for
planning, decision making, and control of autonomous and intelligent
machines.
SENSORS EVOLUTION
A sensor is a device that responds to some external stimuli
and then provides some useful output. With the concept of input and
output, one can begin to understand how sensors play a critical role
in both closed and open loops.
One problem is that sensors have not been specified. In other
words they tend to respond variety of stimuli applied on it without
being able to differentiate one from another. Neverthless, sensors
and sensor technology are necessary ingredients in any control type
application. Without the feedback from the environment that sensors
provide, the system has no data or reference points, and thus no
way of understanding what is right or wrong g with its various
elements.
SENSOR AND SENSOR TECHNOLOGY IN THE PAST
The earliest example of sensors are not inanimate devices but
living organisms. A more recent example of living organisms used in
the early days of coal mining in the United States and Europe.
Robots must have the ability to sense and discriminate
between objects. They must then be able to pick up these objects,
position them properly and work with them without damaging or
destroying them.
SENSORS PRINCIPLES
A sensor is defined as a measurement device which can
detect characteristics of an object through some form of interaction
with them.
Sensors can be classified into two categories:
Contact and noncontact. A contact sensor measure the
response of a target to some form of physical contact .this group of
sensors responds to touch, force ,torque,pressure,temperature or
electrical quantities.
[attachment=28057]
INTRODUCTION
Sensor is a device that detects or senses the value or changes
of value of the variable being measured. The term sensor some
times is used instead of the term detector, primary element or
transducer.
The fusion of information from sensors with different physical
characteristics, such as light, sound, etc enhances the
understanding of our surroundings and provide the basis for
planning, decision making, and control of autonomous and intelligent
machines.
SENSORS EVOLUTION
A sensor is a device that responds to some external stimuli
and then provides some useful output. With the concept of input and
output, one can begin to understand how sensors play a critical role
in both closed and open loops.
One problem is that sensors have not been specified. In other
words they tend to respond variety of stimuli applied on it without
being able to differentiate one from another. Neverthless, sensors
and sensor technology are necessary ingredients in any control type
application. Without the feedback from the environment that sensors
provide, the system has no data or reference points, and thus no
way of understanding what is right or wrong g with its various
elements.
SENSOR AND SENSOR TECHNOLOGY IN THE PAST
The earliest example of sensors are not inanimate devices but
living organisms. A more recent example of living organisms used in
the early days of coal mining in the United States and Europe.
Robots must have the ability to sense and discriminate
between objects. They must then be able to pick up these objects,
position them properly and work with them without damaging or
destroying them.
SENSORS PRINCIPLES
A sensor is defined as a measurement device which can
detect characteristics of an object through some form of interaction
with them.
Sensors can be classified into two categories:
Contact and noncontact. A contact sensor measure the
response of a target to some form of physical contact .this group of
sensors responds to touch, force ,torque,pressure,temperature or
electrical quantities.